Number | Date | Country | Kind |
---|---|---|---|
1-182626 | Jul 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3560856 | Kaneko | Feb 1971 | |
4003041 | van Duuren et al. | Jan 1977 | |
4910750 | Fisher | Mar 1990 |
Entry |
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"Integrated Services Digital Network (ISDN)-Basic Access Interface for Use on Metallic Loops for Application on the Network Side of the NT"; American National Standards Institute, Inc., New York, N.Y.; ANSI T1.601-1988 (Approved Sep. 16, 1988). |